Experimental Study on a New Type of Composite Wall Panel Joint Integrating Load Bearing and Thermal Insulation
In order to address common issues with composite wall panel joints,such as the inflamma-bility and easy detachment of insulation boards,while ensuring their seismic performance,a new type of ceramisite concrete T-shaped composite wall panel joints integrating load-bearing capabilities with thermal insulation was presented.The joints featured a unique sandwich-structured construction that offered several advantages.They were eco-friendly and energy-efficient,lightweight but strong,with good mechanical properties and a reliable insulation system connection.They could also prevent fires.The hysteresis behavior,failure mechanisms,load bearing and deformation capacities,ductility,ener-gy dissipation,and damage of the T-shaped composite wall panel joints were studied through seismic tests.The results showed that the sequence of damage in the integrated composite wall panel joints was from the web,to the flange,and finally to the core area of the joint.Areas of weakness mainly oc-curred at the foot of the web,where the concrete was cracked or crushed and the reinforced bars were stretched or bent.The joint core area demonstrated strong resilience with ample safety margins.The joints were in line with the design requirements of"strong joints,weak components"and policies for wall panel innovation.With a ductility coefficient greater than 3,the safety performance of the joints was good.Through the damage index assessment,the working states of the specimens at each stage were identified.
load bearing and insulation integrationcomposite wall panel joint nodeseismic testhys-teresis and skeleton curvedamage index
国家科技期刊平台
NSTL
万方数据
维普
